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From "Tom Beerbower (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMBARI-1037) Implement an efficient way to provide Ganglia data for heatmap and other cluster visualization tools
Date Tue, 27 Nov 2012 04:21:57 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-1037?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tom Beerbower updated AMBARI-1037:
----------------------------------

    Attachment: AMBARI-1037.patch
    
> Implement an efficient way to provide Ganglia data for heatmap and other cluster visualization
tools 
> -----------------------------------------------------------------------------------------------------
>
>                 Key: AMBARI-1037
>                 URL: https://issues.apache.org/jira/browse/AMBARI-1037
>             Project: Ambari
>          Issue Type: Sub-task
>            Reporter: Tom Beerbower
>            Assignee: Tom Beerbower
>         Attachments: AMBARI-1037.patch
>
>
> Rendering a cluster heatmap requires retrieving a metric (or a set of metrics) across
all hosts in the cluster (current or any point-in-time in the past for which the data points
are available).
> Currently Ganglia metrics a retrieved with one request per resource. This mechanism is
not suited for cluster heatmap rendering purposes as it would require N calls to Ganglia Web
where N is the number of hosts in the cluster. 

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